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 | |
|---|---|---|---|---|---|---|
7076
Grupo Aeroportuario Centro Norte
OMAB
$5.23B
| $16K | ﹤0.01% |
+251
| New | +$19.9K |
|
7077
CALL
Oric Pharmaceuticals
ORIC
$1.23B
| $16K | ﹤0.01% |
2,400
-3,500
| -59% | -$31.3K |
|
7078
CALL
Ranpak Holdings
PACK
$550M
| $16K | ﹤0.01% |
2,500
+300
| +14% | +$2.03K |
|
7079
Paymentus
PAY
$4.29B
| $16K | ﹤0.01% |
+862
| New | +$16.9K |
|
7080
CALL
Palomar
PLMR
$3.79B
| $16K | ﹤0.01% |
200
-2,100
| -91% | -$171K |
|
|
7081
PUT
Palomar
PLMR
$3.79B
| $16K | ﹤0.01% |
200
+100
| +100% | +$8.15K |
|
7082
POET Technologies
POET
$1.17B
| $16K | ﹤0.01% |
7,885
-15,942
| -67% | -$28.8K |
|
7083
PUT
RE/MAX Holdings
RMAX
$206M
| $16K | ﹤0.01% |
+2,000
| New | +$16.2K |
|
7084
Ryanair
RYAAY
$31B
| $16K | ﹤0.01% |
+363
| New | +$18.9K |
|
7085
CALL
Stantec
STN
$8.19B
| $16K | ﹤0.01% |
+200
| New | +$16.3K |
|
7086
PUT
Stevanato
STVN
$5.5B
| $16K | ﹤0.01% |
900
-300
| -25% | -$6.98K |
|
7087
Millicom
TIGO
$16B
| $16K | ﹤0.01% |
668
+324
| +94% | +$7.25K |
|
|
TMHC
7088
CALL
DELISTED
Taylor Morrison
TMHC
| $16K | ﹤0.01% |
300
-400
| -57% | -$22.9K |
|
7089
Vuzix
VUZI
$187M
| $16K | ﹤0.01% |
12,574
+4,102
| +48% | +$5.65K |
|
7090
AdvisorShares Pure Cannabis ETF
YOLO
$29.3M
| $16K | ﹤0.01% |
4,807
+2,397
| +99% | +$9.19K |
|
7091
BBB Foods
TBBB
$4.81B
| $16K | ﹤0.01% |
678
+581
| +599% | +$13.6K |
|
7092
CALL
UL Solutions
ULS
$18.5B
| $16K | ﹤0.01% |
+400
| New | +$15.1K |
|
|
ONIT
7093
CALL
Onity Group
ONIT
$341M
| $16K | ﹤0.01% |
700
| – | – |
|
|
CMRX
7094
PUT
DELISTED
Chimerix, Inc.
CMRX
| $16K | ﹤0.01% |
+19,100
| New | +$18.1K |
|
|
GRTS
7095
DELISTED
Gritstone bio, Inc. Common Stock
GRTS
| $16K | ﹤0.01% |
+26,292
| New | +$22.2K |
|
|
ASTR
7096
PUT
DELISTED
Astra Space, Inc. Class A Common Stock
ASTR
| $16K | ﹤0.01% |
+31,900
| New | +$19.5K |
|
7097
PUT
Acacia Research
ACTG
$447M
| $15K | ﹤0.01% |
3,000
-14,800
| -83% | -$76.6K |
|
|
ALEX
7098
CALL
DELISTED
Alexander & Baldwin
ALEX
| $15K | ﹤0.01% |
900
-1,700
| -65% | -$28K |
|
7099
PUT
Affiliated Managers Group
AMG
$9.78B
| $15K | ﹤0.01% |
+100
| New | +$15.9K |
|
7100
CALL
Amneal Pharmaceuticals
AMRX
$5.99B
| $15K | ﹤0.01% |
2,500
-198,600
| -99% | -$1.26M |
|
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.