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 | |
|---|---|---|---|---|---|---|
2701
CALL
Travel + Leisure Co
TNL
$4.54B
| $1.23M | ﹤0.01% |
27,400
+1,000
| +4% | +$44.9K |
|
2702
CALL
Ero Copper
ERO
$2.71B
| $1.23M | ﹤0.01% |
57,500
-22,000
| -28% | -$461K |
|
2703
Amkor Technology
AMKR
$16.1B
| $1.23M | ﹤0.01% |
30,704
+17,818
| +138% | +$590K |
|
2704
CALL
Alexandria Real Estate Equities
ARE
$8.88B
| $1.23M | ﹤0.01% |
10,500
-11,500
| -52% | -$1.37M |
|
|
FLNA
2705
PUT
Filana Therapeutics
FLNA
$43M
| $1.23M | ﹤0.01% |
99,500
+32,200
| +48% | +$679K |
|
2706
Canadian Pacific Kansas City
CP
$82B
| $1.23M | ﹤0.01% |
+15,561
| New | +$1.27M |
|
|
VSTO
2707
DELISTED
Vista Outdoor Inc.
VSTO
| $1.23M | ﹤0.01% |
+32,550
| New | +$1.12M |
|
2708
PUT
Altimmune
ALT
$539M
| $1.22M | ﹤0.01% |
184,200
+38,400
| +26% | +$283K |
|
2709
CALL
Corsair Gaming
CRSR
$1.05B
| $1.22M | ﹤0.01% |
110,900
-70,600
| -39% | -$800K |
|
2710
CALL
Xcel Energy
XEL
$51B
| $1.22M | ﹤0.01% |
22,900
-4,900
| -18% | -$267K |
|
2711
PUT
Madison Square Garden
MSGS
$9.54B
| $1.22M | ﹤0.01% |
6,500
-5,600
| -46% | -$1.04M |
|
2712
Rockwell Automation
ROK
$51.4B
| $1.22M | ﹤0.01% |
+4,439
| New | +$1.2M |
|
2713
CALL
BlackBerry
BB
$5.01B
| $1.22M | ﹤0.01% |
492,100
+294,800
| +149% | +$822K |
|
2714
CALL
Blue Owl Capital
OBDC
$5.35B
| $1.22M | ﹤0.01% |
79,400
+5,900
| +8% | +$94.3K |
|
2715
CALL
Q2 Holdings
QTWO
$3.42B
| $1.22M | ﹤0.01% |
20,200
+11,700
| +138% | +$672K |
|
2716
PUT
SharkNinja
SN
$21B
| $1.22M | ﹤0.01% |
16,200
+11,800
| +268% | +$831K |
|
2717
CALL
Banc of California
BANC
$3.28B
| $1.22M | ﹤0.01% |
95,200
-29,200
| -23% | -$404K |
|
2718
CALL
Forward Air
FWRD
$482M
| $1.22M | ﹤0.01% |
63,900
+45,700
| +251% | +$944K |
|
2719
PUT
Banco Macro
BMA
$5.7B
| $1.22M | ﹤0.01% |
21,200
+9,800
| +86% | +$562K |
|
2720
Cummins
CMI
$91.7B
| $1.21M | ﹤0.01% |
4,385
-9,098
| -67% | -$2.6M |
|
|
AL
2721
CALL
DELISTED
Air Lease Corp
AL
| $1.21M | ﹤0.01% |
25,500
-28,500
| -53% | -$1.38M |
|
2722
PUT
New Oriental
EDU
$7.84B
| $1.21M | ﹤0.01% |
15,600
-22,400
| -59% | -$1.83M |
|
2723
iShares Expanded Tech-Software Sector ETF
IGV
$13B
| $1.21M | ﹤0.01% |
+13,955
| New | +$1.15M |
|
|
FLNA
2724
CALL
Filana Therapeutics
FLNA
$43M
| $1.21M | ﹤0.01% |
98,200
+6,700
| +7% | +$141K |
|
2725
CALL
AutoNation
AN
$6.97B
| $1.21M | ﹤0.01% |
7,600
-25,400
| -77% | -$4.14M |
|
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.