Simplex Trading Portfolio holdings
Simplex Trading, founded in 2004 and headquartered in Chicago, Illinois, is a technology-driven proprietary trading firm specializing in market-making and liquidity provision, primarily in U.S. equity options and futures options. Leveraging advanced proprietary software and data-driven analysis, the firm optimizes trading strategies and develops innovative solutions to capitalize on financial market opportunities, maintaining a competitive edge through automation and a collaborative team of technologists and traders. With a workforce exceeding 300 and led by CEO Erik Swanson since 2014, Simplex operates with a low-ego, high-intelligence culture, focusing on minimal bureaucracy and rapid execution, while also making strategic venture capital investments in fintech startups. Recognized as a top workplace in Chicago by Built In’s 2025 awards, Simplex continues to evolve, blending cutting-edge technology with a commitment to market efficiency and growth.
Top Buys
| Rank | Stock | Value |
|---|---|---|
| 1 |
NVIDIA
NVDA
|
+$93M |
| 2 |
Citigroup
C
|
+$74.8M |
| 3 |
Pinduoduo
PDD
|
+$50.7M |
| 4 |
Intel
INTC
|
+$47.1M |
| 5 |
Broadcom
AVGO
|
+$46.2M |
Top Sells
| Rank | Stock | Value |
|---|---|---|
| 1 |
State Street Energy Select Sector SPDR ETF
XLE
|
+$94.5M |
| 2 |
Pfizer
PFE
|
+$66.4M |
| 3 |
Boeing
BA
|
+$61.6M |
| 4 |
PayPal
PYPL
|
+$42.2M |
| 5 |
GE Aerospace
GE
|
+$42M |
Sector Composition
| Rank | Sector | Weight |
|---|---|---|
| 1 | Technology | 0.53% |
| 2 | Consumer Discretionary | 0.29% |
| 3 | Healthcare | 0.21% |
| 4 | Financials | 0.2% |
| 5 | Materials | 0.12% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Change in Stake | Capital Flow | |
|---|---|---|---|---|---|---|
2851
CALL
Pembina Pipeline
PBA
$29.3B
| $1.07M | ﹤0.01% |
28,900
-8,200
| -22% | -$296K |
|
2852
PUT
UroGen Pharma
URGN
$1.98B
| $1.07M | ﹤0.01% |
63,600
+59,400
| +1,414% | +$845K |
|
2853
CALL
Amplify Energy
AMPY
$155M
| $1.07M | ﹤0.01% |
157,300
-72,000
| -31% | -$474K |
|
2854
CALL
TORM
TRMD
$3.05B
| $1.07M | ﹤0.01% |
27,500
+16,300
| +146% | +$584K |
|
2855
UGI
UGI
$8B
| $1.06M | ﹤0.01% |
46,410
+24,567
| +112% | +$595K |
|
|
NOAH
2856
CALL
Noah Holdings
NOAH
$594M
| $1.06M | ﹤0.01% |
110,000
+108,500
| +7,233% | +$1.34M |
|
2857
Alta Equipment Group
ALTG
$209M
| $1.06M | ﹤0.01% |
131,726
+96,292
| +272% | +$975K |
|
2858
PUT
Vermilion Energy
VET
$1.66B
| $1.06M | ﹤0.01% |
96,200
+32,700
| +51% | +$389K |
|
|
RDFN
2859
PUT
DELISTED
Redfin
RDFN
| $1.06M | ﹤0.01% |
175,900
-169,500
| -49% | -$1.06M |
|
|
LSXMA
2860
DELISTED
Liberty Media Corporation Series A Liberty SiriusXM Common Stock
LSXMA
| $1.05M | ﹤0.01% |
47,658
+26,715
| +128% | +$637K |
|
2861
Global X Silver Miners ETF NEW
SIL
$4.07B
| $1.05M | ﹤0.01% |
33,801
-4,198
| -11% | -$135K |
|
2862
CALL
ALPS REIT Dividend Dogs ETF
RDOG
$11.6M
| $1.05M | ﹤0.01% |
22,000
+3,200
| +17% | +$116K |
|
|
AZPN
2863
CALL
DELISTED
Aspen Technology Inc
AZPN
| $1.05M | ﹤0.01% |
5,300
+3,500
| +194% | +$719K |
|
|
BIG
2864
PUT
DELISTED
Big Lots, Inc.
BIG
| $1.05M | ﹤0.01% |
607,700
+533,200
| +716% | +$1.72M |
|
|
AGNT
2865
PUT
AGNT Inc
AGNT
$703M
| $1.05M | ﹤0.01% |
93,000
+45,600
| +96% | +$499K |
|
|
OPRA
2866
PUT
Opera Ltd
OPRA
$1.68B
| $1.05M | ﹤0.01% |
74,700
+51,300
| +219% | +$729K |
|
2867
CALL
Energy Fuels
UUUU
$2.88B
| $1.05M | ﹤0.01% |
172,800
-37,300
| -18% | -$228K |
|
2868
CALL
Immunovant
IMVT
$8.21B
| $1.04M | ﹤0.01% |
39,600
+13,600
| +52% | +$387K |
|
2869
CALL
TFI International
TFII
$12B
| $1.04M | ﹤0.01% |
7,200
-134,200
| -95% | -$18.9M |
|
|
ZUO
2870
CALL
DELISTED
Zuora, Inc.
ZUO
| $1.04M | ﹤0.01% |
105,300
+94,100
| +840% | +$905K |
|
2871
PUT
Ionis Pharmaceuticals
IONS
$9.35B
| $1.04M | ﹤0.01% |
21,900
-31,000
| -59% | -$1.27M |
|
2872
CALL
Simply Good Foods
SMPL
$952M
| $1.04M | ﹤0.01% |
+28,800
| New | +$1.03M |
|
2873
CALL
Core Laboratories
CLB
$524M
| $1.04M | ﹤0.01% |
51,200
-600
| -1% | -$10.6K |
|
|
CMPS
2874
PUT
Compass Pathways
CMPS
$1.52B
| $1.04M | ﹤0.01% |
171,800
+165,800
| +2,763% | +$1.31M |
|
2875
CALL
EPAM Systems
EPAM
$4.85B
| $1.03M | ﹤0.01% |
5,500
+500
| +10% | +$107K |
|
Similar funds
Simplex Trading's Q2 2024 Portfolio in Review
As of Q2 2024, Simplex Trading held 10,213 positions worth $162B, down 6.5% from $173B the previous quarter. Its ten largest holdings account for 50% of the portfolio.
Simplex Trading withdrew a net $19.2B in Q2 2024, closing 1,431 positions and reducing 4,061 holdings. Its most notable exit was Boeing, an estimated $61.6M position sold in full.
By sector, the portfolio is most concentrated in Technology at 0.53% of assets, up from 0.38% a quarter earlier, followed by Consumer Discretionary and Healthcare.
Against the trend, Simplex Trading opened a new position in Citigroup worth $77M.
- Simplex Trading's largest Q2 2024 buy was Citigroup: 1,213,247 shares worth $77M.
- Simplex Trading added most to NVIDIA in Q2 2024, an estimated $93M increase.
- Simplex Trading's biggest Q2 2024 reduction was State Street Energy Select Sector SPDR ETF, cutting an estimated $94.5M.
- Simplex Trading fully exited Boeing in Q2 2024, selling an estimated $61.6M.
- Simplex Trading's ten largest holdings make up 50% of its $162B portfolio in Q2 2024.
- Simplex Trading opened 1,358 new positions and closed 1,431 in Q2 2024.
- Simplex Trading's portfolio value fell 6.5% quarter-over-quarter to $162B.
Based on Simplex Trading's 13F filing for Q2 2024, filed 25 Jul 2024.