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 | |
|---|---|---|---|---|---|---|
1401
CALL
Agilent Technologies
A
$39.1B
| $5.31M | ﹤0.01% |
41,000
-2,000
| -5% | -$280K |
|
1402
PUT
Axos Financial
AX
$5.45B
| $5.31M | ﹤0.01% |
93,000
-153,900
| -62% | -$8.37M |
|
1403
CALL
Parker-Hannifin
PH
$125B
| $5.31M | ﹤0.01% |
10,500
-8,000
| -43% | -$4.29M |
|
|
LSXMA
1404
CALL
DELISTED
Liberty Media Corporation Series A Liberty SiriusXM Common Stock
LSXMA
| $5.3M | ﹤0.01% |
179,200
-55,500
| -24% | -$1.32M |
|
1405
Regeneron Pharmaceuticals
REGN
$68.8B
| $5.29M | ﹤0.01% |
+5,037
| New | +$4.88M |
|
1406
PUT
Carpenter Technology
CRS
$30B
| $5.28M | ﹤0.01% |
48,200
+42,200
| +703% | +$4.05M |
|
1407
CALL
TeraWulf
WULF
$9.15B
| $5.28M | ﹤0.01% |
1,185,800
+394,500
| +50% | +$1.06M |
|
1408
CALL
BILL Holdings
BILL
$4.33B
| $5.27M | ﹤0.01% |
100,100
-26,400
| -21% | -$1.49M |
|
|
GTM
1409
ZoomInfo Technologies
GTM
$861M
| $5.27M | ﹤0.01% |
412,461
+248,078
| +151% | +$3.47M |
|
1410
PUT
Everest Group
EG
$15.2B
| $5.26M | ﹤0.01% |
13,800
+3,400
| +33% | +$1.29M |
|
1411
Trane Technologies
TT
$106B
| $5.25M | ﹤0.01% |
15,951
-5,629
| -26% | -$1.79M |
|
1412
PUT
Public Storage
PSA
$60.2B
| $5.24M | ﹤0.01% |
18,200
-3,400
| -16% | -$938K |
|
1413
Delta Air Lines
DAL
$55.9B
| $5.22M | ﹤0.01% |
+110,114
| New | +$5.48M |
|
1414
PUT
Molina Healthcare
MOH
$10.3B
| $5.2M | ﹤0.01% |
17,500
+12,200
| +230% | +$4.14M |
|
1415
CALL
Allegro MicroSystems
ALGM
$8.58B
| $5.17M | ﹤0.01% |
182,900
-89,600
| -33% | -$2.55M |
|
1416
Petrobras
PBR
$121B
| $5.16M | ﹤0.01% |
356,130
+272,012
| +323% | +$4.23M |
|
1417
PUT
Clean Harbors
CLH
$16.1B
| $5.16M | ﹤0.01% |
22,800
-21,500
| -49% | -$4.51M |
|
1418
PUT
Keysight
KEYS
$54.5B
| $5.16M | ﹤0.01% |
37,700
-17,500
| -32% | -$2.56M |
|
1419
Palantir
PLTR
$295B
| $5.15M | ﹤0.01% |
+203,462
| New | +$4.58M |
|
1420
CALL
Flex
FLEX
$43.4B
| $5.14M | ﹤0.01% |
177,000
-134,000
| -43% | -$4.01M |
|
1421
Global Payments
GPN
$22.1B
| $5.14M | ﹤0.01% |
+53,153
| New | +$5.86M |
|
1422
PUT
JB Hunt Transport Services
JBHT
$27.1B
| $5.14M | ﹤0.01% |
32,100
+21,800
| +212% | +$3.66M |
|
1423
PUT
Groupon
GRPN
$980M
| $5.13M | ﹤0.01% |
335,300
-95,500
| -22% | -$1.28M |
|
1424
Realty Income
O
$61.2B
| $5.1M | ﹤0.01% |
96,536
+88,372
| +1,082% | +$4.72M |
|
1425
PUT
C.H. Robinson
CHRW
$22B
| $5.08M | ﹤0.01% |
57,600
-106,700
| -65% | -$8.52M |
|
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.