Simplex Trading, Llc ownership in DDD / 3D Systems Corporation

3D Systems Corporation

US ˙ NYSE ˙ US88554D2053

Security	DDD / 3D Systems Corporation
Institution	Simplex Trading, Llc
Latest Disclosed Ownership	34,739 shares
Latest Disclosed Value	$ 65,309

On May 14, 2026 - Simplex Trading, Llc filed a 13F-HR form disclosing ownership of 34,739 shares of 3D Systems Corporation (US:DDD) valued at $65,309 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 11, 2026 disclosing 536 shares of 3D Systems Corporation. The current value of the position is $125,408 USD.

Simplex Trading, Llc has a history of taking positions in derivatives of the underlying security (DDD) in the form of stock options. The firm currently holds call options representing 30,100 of underlying shares valued at $56,588 USD and put options representing 32,400 of underlying shares valued at $60,912 USD .

Note: prior versions of this page mistakenly stated that the share values represented the number of options, not the number of underlying shares. For more information on the data backing these reports, please see the SEC document Frequently Asked Questions About Form 13F.

Institutional Ownership: 13F and NPORT Filings

The Security and Class in the table below are shown exactly as filed by the investor. We do our best to track continuity of investments through acquisitions, and this will be reflected in the table as changes in names. In addition to descriptive data, performance of the investment is shown over time. To calculate quarterly performance, we first calculate cost basis of the shares purchased during the quarter, then use that to calculate gross profit. Quarterly return is Gross Profit / Starting Portfolio value.

Note that cost basis is calculated and stored in thousands, so small quarterly changes in shares frequently result in a cost basis of zero.

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Institutional Put/Call Ratios

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In addition to reporting standard equity and debt issues, institutions with more than 100MM assets under management must also disclose their put and call option holdings. Since put options generally indicate negative sentiment, and call options indicate positive sentiment, we can get a sense of the overall institutional sentiment by plotting the ratio of puts to calls. The chart to the right plots the historical put/call ratio for this instrument.

Using Put/Call Ratio as an indicator of investor sentiment overcomes one of the key deficiencies of using total institutional ownership, which is that a significant amount of assets under management are invested passively to track indices. Passively-managed funds do not typically buy options, so the put/call ratio indicator more closely tracks the sentiment of actively-managed funds.

DDD / 3D Systems Corporation Historical Put/Call Ratio

Disclosed Equity Positions (from 13F/NPORT Filings)

File Date	Effective Date	Form	Security	Class	ID	Reported Shares	ΔShares	ΔShares (%)	Reported Value (x1000)	ΔValue (%)	Alloc (%)
2026-05-14	2026-03-31	13F	3D SYS CORP DEL	COM	88554D205	34,739	34,203	6,381.16	65		0.0000
2026-02-11	2025-12-31	13F	3-D SYS CORP DEL	COM	88554D205	536	-122,420	-99.56	1		0.0000
2025-11-12	2025-09-30	13F	3-D SYS CORP DEL	COM	88554D205	122,956	122,956		0		0.0002
2025-08-05	2025-06-30	13F	3-D SYS CORP DEL	COM	88554D205	0	-114,161	-100.00	0		0.0000
2025-05-12	2025-03-31	13F	3-D SYS CORP DEL	COM	88554D205	114,161	114,161		0		0.0002
2024-11-08	2024-09-30	13F	3-D SYS CORP DEL	COM	88554D205	0	-133,350	-100.00	0		0.0000
2024-07-25	2024-06-30	13F	3-D SYS CORP DEL	COM	88554D205	133,350	-24,022	-15.26	0		0.0003
2024-04-25	2024-03-31	13F	3-D SYS CORP DEL	COM	88554D205	157,372	142,249	940.61	1		0.0004
2024-02-02	2023-12-31	13F	3-D SYS CORP DEL	COM	88554D205	15,123	-3,912	-20.55	0		0.0001
2023-11-01	2023-09-30	13F	3-D SYS CORP DEL	COM	88554D205	19,035	-108,339	-85.06	0	-100.00	0.0001
2023-08-04	2023-06-30	13F	3-D SYS CORP DEL	COM	88554D205	127,374	109,613	617.16	1		0.0010
2023-04-27	2023-03-31	13F	3-D SYS CORP DEL	COM	88554D205	17,761	17,761		0		0.0002
2022-11-04	2022-09-30	13F	3-D SYS CORP DEL	COM	88554D205	0	-25,743	-100.00	0	-100.00
2022-08-03	2022-06-30	13F	3-D SYS CORP DEL	COM	88554D205	25,743	-110,954	-81.17	249	-89.08	0.0003
2022-05-02	2022-03-31	13F	3-D SYS CORP DEL	COM	88554D205	136,697	48,292	54.63	2,280	19.75	0.0021
2022-02-23	2021-12-31	13F/A-1	3-D SYS CORP DEL	COM	88554D205	88,405	42,459	92.41	1,904	7.69	0.0019
2022-02-04	2021-12-31	13F	3-D SYS CORP DEL	COM	88554D205	45,946	0		1,768		0.0017
2021-10-28	2021-09-30	13F	3-D SYS CORP DEL	COM	88554D205	45,946	224	0.49	1,768	-3.23	0.0017
2021-08-12	2021-06-30	13F	3-D SYS CORP DEL	COM	88554D205	45,722	21,596	89.51	1,827	175.98	0.0018
2021-04-26	2021-03-31	13F	3-D SYS CORP DEL	COM	88554D205	24,126	24,026	24,026.00	662	66,100.00	0.0012
2021-02-02	2020-12-31	13F	3-D SYS CORP DEL	COM	88554D205	100	-50,671	-99.80	1	-99.60	0.0000
2020-10-14	2020-09-30	13F	3-D SYS CORP DEL	COM	88554D205	50,771	9,673	23.54	249	-13.24	0.0003
2020-07-13	2020-06-30	13F	3-D SYS CORP DEL	COM	88554D205	41,098	-1,250	-2.95	287	-11.96	0.0005
2020-04-29	2020-03-31	13F	3-D SYS CORP DEL	COM	88554D205	42,348	42,348	3.04	326	13.59	0.0006
2020-02-05	2019-12-31	13F	3-D SYS CORP DEL	COM	88554D205	0	-21,235	-100.00	0	-100.00
2019-10-15	2019-09-30	13F	3-D SYS CORP DEL	COM	88554D205	21,235	-19,721	-48.15	173	-53.49	0.0005
2019-07-26	2019-06-30	13F	3-D SYS CORP DEL	COM	88554D205	40,956	40,956	92.87	372	115.03	0.0010
2019-01-16	2018-12-31	13F	3-D SYS CORP DEL	COM	88554D205	0	-10,061	-100.00	0	-100.00
2018-10-23	2018-09-30	13F	3-D SYS CORP DEL	COM	88554D205	10,061	10,061		190		0.0006
2018-01-10	2017-12-31	13F	3-D SYS CORP DEL	COM	88554D205	0	-56,855	-100.00	0	-100.00
2017-10-25	2017-09-30	13F	3-D SYS CORP DEL	COM	88554D205	56,855	56,855		761		0.0311
2017-07-12	2017-06-30	13F	3-D SYS CORP DEL	COM	88554D205	0	-14,434	-100.00	0	-100.00
2017-04-21	2017-03-31	13F	3-D SYS CORP DEL	COM	88554D205	14,434	14,434		215		0.0093
2016-10-07	2016-09-30	13F	3-D SYS CORP DEL	COM	88554D205	0	-27,804	-100.00	0	-100.00
2016-07-18	2016-06-30	13F	3-D SYS CORP DEL	COM	88554D205	27,804	24,061	642.83	380	566.67	0.0254
2016-04-14	2016-03-31	13F	3-D SYS CORP DEL	COM	88554D205	3,743	3,743	-86.54	57	-85.00	0.0045
2016-01-20	2015-12-31	13F	3-D SYS CORP DEL	COM	88554D205	0	-7,601	-100.00	0	-100.00
2015-10-08	2015-09-30	13F	3-D SYS CORP DEL	COM	88554D205	7,601	7,601	0.00	87		0.0064
2015-07-08	2015-06-30	13F	3-D SYS CORP DEL	COM	88554D205	0	-8,827	-100.00	0	-100.00
2015-04-21	2015-03-31	13F	3-D SYS CORP DEL	COM	88554D205	8,827	8,827		242		0.0281

Disclosed Call Options

File Date	Effective Date	Form	Security	Class	Opt	Shares	ΔShares (%)	Value (x1000)	ΔValue (%)	Cost Basis (x1000)	Profit (x1000)	Return (%)
2026-05-14	2026-03-31	13F	3D SYS CORP DEL	CALL	Call	30,100	-74.47	57	-73.08	n/a	n/a	n/a
2026-02-11	2025-12-31	13F	3-D SYS CORP DEL	CALL	Call	117,900	-9.79	209		n/a	n/a	n/a
2025-11-12	2025-09-30	13F	3-D SYS CORP DEL	CALL	Call	130,700	801.38	0		n/a	n/a	n/a
2025-08-05	2025-06-30	13F	3-D SYS CORP DEL	CALL	Call	14,500	-61.94	0		n/a	n/a	n/a
2025-05-12	2025-03-31	13F	3-D SYS CORP DEL	CALL	Call	38,100	-69.47	0		n/a	n/a	n/a
2025-02-11	2024-12-31	13F	3-D SYS CORP DEL	CALL	Call	124,800	90.53	0		n/a	n/a	n/a
2024-11-08	2024-09-30	13F	3-D SYS CORP DEL	CALL	Call	65,500	-44.96	0		n/a	n/a	n/a
2024-07-25	2024-06-30	13F	3-D SYS CORP DEL	CALL	Call	119,000	126.24	0		n/a	n/a	n/a
2024-04-25	2024-03-31	13F	3-D SYS CORP DEL	CALL	Call	52,600	-2.77	0		n/a	n/a	n/a
2024-02-02	2023-12-31	13F	3-D SYS CORP DEL	CALL	Call	54,100	-26.99	0		n/a	n/a	n/a
2023-11-01	2023-09-30	13F	3-D SYS CORP DEL	CALL	Call	74,100	229.33	0		n/a	n/a	n/a
2023-08-04	2023-06-30	13F	3-D SYS CORP DEL	CALL	Call	22,500	-8.16	0		n/a	n/a	n/a
2023-04-27	2023-03-31	13F	3-D SYS CORP DEL	CALL	Call	24,500	-73.94	0		n/a	n/a	n/a
2023-02-02	2022-12-31	13F	3-D SYS CORP DEL	CALL	Call	94,000	-59.32	1	-100.00	n/a	n/a	n/a
2022-11-04	2022-09-30	13F	3-D SYS CORP DEL	CALL	Call	231,100	76.28	1,844	45.08	n/a	n/a	n/a
2022-08-03	2022-06-30	13F	3-D SYS CORP DEL	CALL	Call	131,100	-28.36	1,271	-58.36	n/a	n/a	n/a
2022-05-02	2022-03-31	13F	3-D SYS CORP DEL	CALL	Call	183,000	64.42	3,052	27.33	n/a	n/a	n/a
2022-02-23	2021-12-31	13F/A	3-D SYS CORP DEL	CALL	Call	111,300	-29.42	2,397	-60.52	n/a	n/a	n/a
2022-02-04	2021-12-31	13F	3-D SYS CORP DEL	CALL	Call	157,700		6,071		n/a	n/a	n/a
2021-10-28	2021-09-30	13F	3-D SYS CORP DEL	CALL	Call	157,700	19.74	6,071	15.33	n/a	n/a	n/a
2021-08-12	2021-06-30	13F	3-D SYS CORP DEL	CALL	Call	131,700	5,748.13	5,264	-14.81	n/a	n/a	n/a
2021-04-26	2021-03-31	13F	3-D SYS CORP DEL	CALL	Call	2,252	-0.84	6,179	159.62	n/a	n/a	n/a
2021-02-02	2020-12-31	13F	3-D SYS CORP DEL	CALL	Call	2,271	119.21	2,380	368.50	n/a	n/a	n/a
2020-10-14	2020-09-30	13F	3-D SYS CORP DEL	CALL	Call	1,036	15.62	508	-18.85	n/a	n/a	n/a
2020-07-13	2020-06-30	13F	3-D SYS CORP DEL	CALL	Call	896	71.65	626	55.72	n/a	n/a	n/a
2020-04-29	2020-03-31	13F	3-D SYS CORP DEL	CALL	Call	522	41.46	402	24.84	n/a	n/a	n/a
2020-02-05	2019-12-31	13F	3-D SYS CORP DEL	CALL	Call	369	122.29	322	138.52	n/a	n/a	n/a
2019-10-15	2019-09-30	13F	3-D SYS CORP DEL	CALL	Call	166	-65.91	135	-69.53	n/a	n/a	n/a
2019-07-26	2019-06-30	13F	3-D SYS CORP DEL	CALL	Call	487	-72.39	443	-76.66	n/a	n/a	n/a
2019-04-18	2019-03-31	13F	3-D SYS CORP DEL	CALL	Call	1,764	68.16	1,898	78.05	n/a	n/a	n/a
2019-01-16	2018-12-31	13F	3-D SYS CORP DEL	CALL	Call	1,049	179.73	1,066	50.56	n/a	n/a	n/a
2018-10-23	2018-09-30	13F	3-D SYS CORP DEL	CALL	Call	375	-68.91	708	-57.48	n/a	n/a	n/a
2018-07-30	2018-06-30	13F	3-D SYS CORP DEL	CALL	Call	1,206	9.44	1,665	1,500.96	n/a	n/a	n/a
2018-04-26	2018-03-31	13F	3-D SYS CORP DEL	CALL	Call	1,102	-20.38	104	89.09	n/a	n/a	n/a
2018-01-10	2017-12-31	13F	3-D SYS CORP DEL	CALL	Call	1,384	373.97	55	7.84	n/a	n/a	n/a
2017-10-25	2017-09-30	13F	3-D SYS CORP DEL	CALL	Call	292	-79.42	51	-60.47	n/a	n/a	n/a
2017-07-12	2017-06-30	13F	3-D SYS CORP DEL	CALL	Call	1,419	56.97	129	84.29	n/a	n/a	n/a
2017-04-21	2017-03-31	13F	3-D SYS CORP DEL	CALL	Call	904	-35.34	70	45.83	n/a	n/a	n/a
2017-01-11	2016-12-31	13F	3-D SYS CORP DEL	CALL	Call	1,398	75.19	48	-76.12	n/a	n/a	n/a
2016-10-07	2016-09-30	13F	3-D SYS CORP DEL	CALL	Call	798	3.77	201	109.38	n/a	n/a	n/a
2016-07-18	2016-06-30	13F	3-D SYS CORP DEL	CALL	Call	769	-11.51	96	-63.08	n/a	n/a	n/a
2016-04-14	2016-03-31	13F	3-D SYS CORP DEL	CALL	Call	869	-41.12	260	25,900.00	n/a	n/a	n/a
2016-01-20	2015-12-31	13F	3-D SYS CORP DEL	CALL	Call	1,476	77.83	1	-83.33	n/a	n/a	n/a
2015-10-08	2015-09-30	13F	3-D SYS CORP DEL	CALL	Call	830	102.93	6	-77.78	n/a	n/a	n/a
2015-07-08	2015-06-30	13F	3-D SYS CORP DEL	CALL	Call	409	-9.11	27	-52.63	n/a	n/a	n/a
2015-04-21	2015-03-31	13F	3-D SYS CORP DEL	CALL	Call	450	-55.71	57	-46.23	n/a	n/a	n/a
2015-03-04	2014-12-31	13F	3-D SYS	CALL	Call	1,016		106		n/a	n/a	n/a

Disclosed Put Options

File Date	Effective Date	Form	Security	Class	Opt	Shares	ΔShares (%)	Value (x1000)	ΔValue (%)	Cost Basis (x1000)	Profit (x1000)	Return (%)
2026-05-14	2026-03-31	13F	3D SYS CORP DEL	PUT	Put	32,400	-64.20	61	-62.50	n/a	n/a	n/a
2026-02-11	2025-12-31	13F	3-D SYS CORP DEL	PUT	Put	90,500	-34.42	160		n/a	n/a	n/a
2025-11-12	2025-09-30	13F	3-D SYS CORP DEL	PUT	Put	138,000	59.17	0		n/a	n/a	n/a
2025-08-05	2025-06-30	13F	3-D SYS CORP DEL	PUT	Put	86,700	-62.40	0		n/a	n/a	n/a
2025-05-12	2025-03-31	13F	3-D SYS CORP DEL	PUT	Put	230,600	19.85	0		n/a	n/a	n/a
2025-02-11	2024-12-31	13F	3-D SYS CORP DEL	PUT	Put	192,400	718.72	1		n/a	n/a	n/a
2024-11-08	2024-09-30	13F	3-D SYS CORP DEL	PUT	Put	23,500	-92.52	0		n/a	n/a	n/a
2024-07-25	2024-06-30	13F	3-D SYS CORP DEL	PUT	Put	314,100	-28.39	1	-100.00	n/a	n/a	n/a
2024-04-25	2024-03-31	13F	3-D SYS CORP DEL	PUT	Put	438,600	126.55	2	0.00	n/a	n/a	n/a
2024-02-02	2023-12-31	13F	3-D SYS CORP DEL	PUT	Put	193,600	-2.47	1		n/a	n/a	n/a
2023-11-01	2023-09-30	13F	3-D SYS CORP DEL	PUT	Put	198,500	-30.93	1	-100.00	n/a	n/a	n/a
2023-08-04	2023-06-30	13F	3-D SYS CORP DEL	PUT	Put	287,400	169.10	3	100.00	n/a	n/a	n/a
2023-04-27	2023-03-31	13F	3-D SYS CORP DEL	PUT	Put	106,800	339.51	1		n/a	n/a	n/a
2023-02-02	2022-12-31	13F	3-D SYS CORP DEL	PUT	Put	24,300	-21.61	0	-100.00	n/a	n/a	n/a
2022-11-04	2022-09-30	13F	3-D SYS CORP DEL	PUT	Put	31,000	-74.25	247	-78.83	n/a	n/a	n/a
2022-08-03	2022-06-30	13F	3-D SYS CORP DEL	PUT	Put	120,400	-57.38	1,167	-75.23	n/a	n/a	n/a
2022-05-02	2022-03-31	13F	3-D SYS CORP DEL	PUT	Put	282,500	8.82	4,712	-15.72	n/a	n/a	n/a
2022-02-23	2021-12-31	13F/A	3-D SYS CORP DEL	PUT	Put	259,600	173.55	5,591	53.05	n/a	n/a	n/a
2022-02-04	2021-12-31	13F	3-D SYS CORP DEL	PUT	Put	94,900		3,653		n/a	n/a	n/a
2021-10-28	2021-09-30	13F	3-D SYS CORP DEL	PUT	Put	94,900	5.33	3,653	1.44	n/a	n/a	n/a
2021-08-12	2021-06-30	13F	3-D SYS CORP DEL	PUT	Put	90,100	5,431.00	3,601	-19.42	n/a	n/a	n/a
2021-04-26	2021-03-31	13F	3-D SYS CORP DEL	PUT	Put	1,629	39.83	4,469	266.31	n/a	n/a	n/a
2021-02-02	2020-12-31	13F	3-D SYS CORP DEL	PUT	Put	1,165	28.73	1,220	174.77	n/a	n/a	n/a
2020-10-14	2020-09-30	13F	3-D SYS CORP DEL	PUT	Put	905	102.01	444	41.85	n/a	n/a	n/a
2020-07-13	2020-06-30	13F	3-D SYS CORP DEL	PUT	Put	448	-49.21	313	-53.97	n/a	n/a	n/a
2020-04-29	2020-03-31	13F	3-D SYS CORP DEL	PUT	Put	882	149.86	680	120.78	n/a	n/a	n/a
2020-02-05	2019-12-31	13F	3-D SYS CORP DEL	PUT	Put	353	-18.66	308	-12.75	n/a	n/a	n/a
2019-10-15	2019-09-30	13F	3-D SYS CORP DEL	PUT	Put	434	12.14	353	0.28	n/a	n/a	n/a
2019-07-26	2019-06-30	13F	3-D SYS CORP DEL	PUT	Put	387	-13.03	352	-26.36	n/a	n/a	n/a
2019-04-18	2019-03-31	13F	3-D SYS CORP DEL	PUT	Put	445	194.70	478	212.42	n/a	n/a	n/a
2019-01-16	2018-12-31	13F	3-D SYS CORP DEL	PUT	Put	151	-56.73	153	-76.78	n/a	n/a	n/a
2018-10-23	2018-09-30	13F	3-D SYS CORP DEL	PUT	Put	349	-53.77	659	-36.76	n/a	n/a	n/a
2018-07-30	2018-06-30	13F	3-D SYS CORP DEL	PUT	Put	755	164.91	1,042	768.33	n/a	n/a	n/a
2018-04-26	2018-03-31	13F	3-D SYS CORP DEL	PUT	Put	285	-57.78	120	-80.89	n/a	n/a	n/a
2018-01-10	2017-12-31	13F	3-D SYS CORP DEL	PUT	Put	675	-59.75	628	28.69	n/a	n/a	n/a
2017-10-25	2017-09-30	13F	3-D SYS CORP DEL	PUT	Put	1,677	93.87	488	27.75	n/a	n/a	n/a
2017-07-12	2017-06-30	13F	3-D SYS CORP DEL	PUT	Put	865	-39.30	382	-14.92	n/a	n/a	n/a
2017-04-21	2017-03-31	13F	3-D SYS CORP DEL	PUT	Put	1,425	303.68	449	161.05	n/a	n/a	n/a
2017-01-11	2016-12-31	13F	3-D SYS CORP DEL	PUT	Put	353	-48.39	172	31.30	n/a	n/a	n/a
2016-10-07	2016-09-30	13F	3-D SYS CORP DEL	PUT	Put	684	-41.79	131	-46.75	n/a	n/a	n/a
2016-07-18	2016-06-30	13F	3-D SYS CORP DEL	PUT	Put	1,175	-50.88	246	-6.82	n/a	n/a	n/a
2016-04-14	2016-03-31	13F	3-D SYS CORP DEL	PUT	Put	2,392	235.48	264	-7.37	n/a	n/a	n/a
2016-01-20	2015-12-31	13F	3-D SYS CORP DEL	PUT	Put	713	15.56	285	-69.84	n/a	n/a	n/a
2015-10-08	2015-09-30	13F	3-D SYS CORP DEL	PUT	Put	617	22.18	945	11.83	n/a	n/a	n/a
2015-07-08	2015-06-30	13F	3-D SYS CORP DEL	PUT	Put	505	-42.09	845	5.36	n/a	n/a	n/a
2015-04-21	2015-03-31	13F	3-D SYS CORP DEL	PUT	Put	872	-11.92	802	-29.65	n/a	n/a	n/a
2015-03-04	2014-12-31	13F	3-D SYS	PUT	Put	990		1,140		n/a	n/a	n/a

Legend

Shares: The total number of shares held by the institution at the end of the reporting period (the effective date). This is provided in the filing.
Value: The total value of the shares as of the effective date. This is provided in the filing.
Avg. Share Price: The weighted average share price of the shares held by the institution. We use FIFO accounting to determine this price
Class: This is the security class as indicated by the filer. There are a variety of values for this field. Common values include "EC" = equity common, "EP" - equity preferred

Allocation (%): The percent of the institution's portfolio that this position represents. This is provided in NPORT filings. For 13F filings, we calculate it.
Change in Allocation: The change in allocation from the prior reporting period. This is calculated as current allocation - prior allocation.
Change in Allocation (%): The percent change in allocation from the prior reporting period. This is calculated as (current allocation - prior allocation) / prior allocation.
Cost Basis: The total cost of the shares held. This is calculated as reported shares * avg. share price
Unrealized Gain/Loss: This is the market value of the position as of the effective date minus the cost basis.