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 |
Microsoft
MSFT
|
+$114M |
| 2 |
NVIDIA
NVDA
|
+$85.9M |
| 3 |
Citigroup
C
|
+$61.5M |
| 4 |
Berkshire Hathaway Class B
BRK.B
|
+$45.5M |
| 5 |
Pfizer
PFE
|
+$41.6M |
Top Sells
| Rank | Stock | Value |
|---|---|---|
| 1 |
Apple
AAPL
|
+$467M |
| 2 |
Vanguard S&P 500 ETF
VOO
|
+$71.2M |
| 3 |
Meta Platforms (Facebook)
META
|
+$47.6M |
| 4 |
Intel
INTC
|
+$41.9M |
| 5 |
TSMC
TSM
|
+$35.9M |
Sector Composition
| Rank | Sector | Weight |
|---|---|---|
| 1 | Technology | 0.51% |
| 2 | Financials | 0.35% |
| 3 | Consumer Discretionary | 0.3% |
| 4 | Healthcare | 0.25% |
| 5 | Industrials | 0.18% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Change in Stake | Capital Flow | |
|---|---|---|---|---|---|---|
|
DBD
5901
CALL
DELISTED
Diebold Nixdorf Incorporated
DBD
| $75K | ﹤0.01% |
30,900
-28,000
| -48% | -$93.5K |
|
|
AVCT
5902
DELISTED
American Virtual Cloud Technologies, Inc. Common Stock
AVCT
| $75K | ﹤0.01% |
25,007
+22,144
| +773% | +$76K |
|
|
FRMM
5903
CALL
Forum Markets
FRMM
$77.1M
| $74K | ﹤0.01% |
29
+18
| +164% | +$65.7K |
|
5904
PUT
Build-A-Bear
BBW
$430M
| $74K | ﹤0.01% |
5,600
-7,800
| -58% | -$122K |
|
5905
CALL
Vita Coco
COCO
$3.73B
| $74K | ﹤0.01% |
6,500
-11,000
| -63% | -$143K |
|
5906
InterDigital
IDCC
$8.34B
| $74K | ﹤0.01% |
+1,855
| New | +$100K |
|
5907
PUT
Jackson Financial
JXN
$9.32B
| $74K | ﹤0.01% |
2,700
-46,900
| -95% | -$1.39M |
|
|
ORC
5908
PUT
Orchid Island Capital
ORC
$1.27B
| $74K | ﹤0.01% |
9,100
+2,860
| +46% | +$39.7K |
|
5909
PUT
Patria Investments
PAX
$1.84B
| $74K | ﹤0.01% |
5,700
-9,700
| -63% | -$136K |
|
5910
PUT
Progyny
PGNY
$2.47B
| $74K | ﹤0.01% |
2,000
-22,200
| -92% | -$831K |
|
5911
CALL
SelectQuote
SLQT
$131M
| $74K | ﹤0.01% |
101,900
-82,800
| -45% | -$138K |
|
5912
PUT
UNIFI
UFI
$126M
| $74K | ﹤0.01% |
+7,800
| New | +$97.2K |
|
5913
CALL
Viavi Solutions
VIAV
$9.95B
| $74K | ﹤0.01% |
5,700
+3,900
| +217% | +$55.6K |
|
5914
PUT
VirTra
VTSI
$35.2M
| $74K | ﹤0.01% |
13,800
+8,600
| +165% | +$45.8K |
|
|
CMRX
5915
CALL
DELISTED
Chimerix, Inc.
CMRX
| $74K | ﹤0.01% |
38,600
+900
| +2% | +$2.02K |
|
|
NSTB
5916
PUT
DELISTED
Northern Star Investment Corp. II
NSTB
| $74K | ﹤0.01% |
7,500
+2,100
| +39% | +$20.7K |
|
|
RBT
5917
CALL
DELISTED
Rubicon Technologies, Inc.
RBT
| $74K | ﹤0.01% |
+4,388
| New | +$148K |
|
|
APPH
5918
PUT
DELISTED
AppHarvest, Inc. Common Stock
APPH
| $74K | ﹤0.01% |
38,000
+33,600
| +764% | +$109K |
|
5919
Adecoagro
AGRO
$1.33B
| $73K | ﹤0.01% |
8,908
+3,915
| +78% | +$32.9K |
|
5920
PUT
Alamo Group
ALG
$2.07B
| $73K | ﹤0.01% |
600
+500
| +500% | +$63.6K |
|
|
CGAU
5921
CALL
Centerra Gold
CGAU
$3.55B
| $73K | ﹤0.01% |
16,600
-9,300
| -36% | -$48.4K |
|
5922
GoDaddy
GDDY
$11.3B
| $73K | ﹤0.01% |
+1,039
| New | +$78.2K |
|
5923
iShares International Treasury Bond ETF
IGOV
$1.54B
| $73K | ﹤0.01% |
2,000
+1,800
| +900% | +$71.6K |
|
5924
CALL
IT Tech Packaging
ITP
$3.08M
| $73K | ﹤0.01% |
94,300
+85,030
| +917% | +$82.2K |
|
5925
LiveWire
LVWR
$291M
| $73K | ﹤0.01% |
+10,259
| New | +$76.6K |
|
Similar funds
Simplex Trading's Q3 2022 Portfolio in Review
As of Q3 2022, Simplex Trading held 11,570 positions worth $88.5B, down 6% from $94.1B the previous quarter. Its ten largest holdings account for 38% of the portfolio.
Simplex Trading's Q3 2022 filing shows 1,564 new, 4,281 increased, 3,851 reduced and 1,575 closed positions. Its largest new stake was Microsoft: 432,062 shares worth $101M. The largest sale was Apple, an estimated $467M.
By sector, the portfolio is most concentrated in Technology at 0.51% of assets, down from 0.84% a quarter earlier, followed by Financials and Consumer Discretionary.
- Simplex Trading's largest Q3 2022 buy was Microsoft: 432,062 shares worth $101M.
- Simplex Trading added most to NVIDIA in Q3 2022, an estimated $85.9M increase.
- Simplex Trading's biggest Q3 2022 reduction was Apple, cutting an estimated $467M.
- Simplex Trading fully exited iShares Core S&P 500 ETF in Q3 2022, selling an estimated $34.3M.
- Simplex Trading's ten largest holdings make up 38% of its $88.5B portfolio in Q3 2022.
- Simplex Trading opened 1,564 new positions and closed 1,575 in Q3 2022.
- Simplex Trading's portfolio value fell 6% quarter-over-quarter to $88.5B.
Based on Simplex Trading's 13F filing for Q3 2022, filed 4 Nov 2022.