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 | |
|---|---|---|---|---|---|---|
5026
CALL
Amplitude
AMPL
$1.14B
| $137K | ﹤0.01% |
15,500
-68,600
| -82% | -$644K |
|
5027
CALL
Donnelley Financial Solutions
DFIN
$1.17B
| $137K | ﹤0.01% |
2,300
-14,200
| -86% | -$867K |
|
5028
CALL
First Financial Bancorp
FFBC
$3.55B
| $137K | ﹤0.01% |
6,200
-7,300
| -54% | -$161K |
|
5029
Ternium
TX
$9.64B
| $137K | ﹤0.01% |
+3,664
| New | +$151K |
|
5030
PUT
Vanguard Total Bond Market
BND
$158B
| $136K | ﹤0.01% |
1,900
-100
| -5% | -$7.16K |
|
5031
Beazer Homes USA
BZH
$891M
| $136K | ﹤0.01% |
+4,980
| New | +$141K |
|
5032
PUT
CenterPoint Energy
CNP
$27.8B
| $136K | ﹤0.01% |
4,400
+2,600
| +144% | +$76.8K |
|
5033
CALL
Cemex
CX
$17.2B
| $136K | ﹤0.01% |
21,400
-177,200
| -89% | -$1.36M |
|
|
DMC
5034
Del Monte Corp
DMC
$1.41B
| $136K | ﹤0.01% |
6,270
+6,017
| +2,378% | +$145K |
|
5035
iShares S&P India Nifty 50 Index Fund
INDY
$562M
| $136K | ﹤0.01% |
2,548
+1,428
| +128% | +$73K |
|
5036
CALL
Mueller Industries
MLI
$14.8B
| $136K | ﹤0.01% |
4,800
-5,200
| -52% | -$146K |
|
|
SHCO
5037
DELISTED
Soho House & Co
SHCO
| $136K | ﹤0.01% |
25,672
-100,657
| -80% | -$539K |
|
5038
PUT
Vertex
VERX
$2.04B
| $136K | ﹤0.01% |
3,800
-1,000
| -21% | -$32.2K |
|
5039
PUT
BGC Group
BGC
$5.6B
| $135K | ﹤0.01% |
16,300
-500
| -3% | -$4.12K |
|
5040
PUT
Curtiss-Wright
CW
$26.5B
| $135K | ﹤0.01% |
+500
| New | +$134K |
|
5041
CALL
MBIA
MBI
$274M
| $135K | ﹤0.01% |
24,600
-3,300
| -12% | -$19.8K |
|
5042
PUT
Regal Rexnord
RRX
$13.5B
| $135K | ﹤0.01% |
1,000
-13,400
| -93% | -$2.08M |
|
|
SCPH
5043
CALL
DELISTED
scPharmaceuticals
SCPH
| $135K | ﹤0.01% |
31,200
+600
| +2% | +$2.64K |
|
5044
ProShares UltraShort S&P500
SDS
$420M
| $135K | ﹤0.01% |
1,172
-445
| -28% | -$56K |
|
|
UNIT
5045
PUT
Uniti Group
UNIT
$2.26B
| $135K | ﹤0.01% |
46,500
-55,100
| -54% | -$231K |
|
5046
CALL
Wheels Up
UP
$217M
| $135K | ﹤0.01% |
3,595
+3,570
| +14,280% | +$171K |
|
5047
Sprott Uranium Miners ETF
URNM
$1.79B
| $135K | ﹤0.01% |
+2,759
| New | +$146K |
|
5048
Vanda Pharmaceuticals
VNDA
$312M
| $135K | ﹤0.01% |
23,920
-9,427
| -28% | -$48.7K |
|
5049
PUT
Annovis Bio
ANVS
$75.3M
| $134K | ﹤0.01% |
23,300
-109,200
| -82% | -$885K |
|
5050
Alliance Resource Partners
ARLP
$3.37B
| $134K | ﹤0.01% |
5,508
-88,261
| -94% | -$2M |
|
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.