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 | |
|---|---|---|---|---|---|---|
1276
PUT
Emerson Electric
EMR
$82.9B
| $4.48M | 0.01% |
61,200
-28,800
| -32% | -$2.39M |
|
1277
CALL
Universal Display
OLED
$3.71B
| $4.48M | 0.01% |
47,500
-13,200
| -22% | -$1.46M |
|
|
DQ
1278
CALL
Daqo New Energy
DQ
$790M
| $4.46M | 0.01% |
84,100
-84,300
| -50% | -$5.38M |
|
1279
CALL
IMAX
IMAX
$2.38B
| $4.46M | 0.01% |
316,200
+306,600
| +3,194% | +$4.92M |
|
|
VTLE
1280
PUT
DELISTED
Vital Energy
VTLE
| $4.46M | 0.01% |
71,000
+55,400
| +355% | +$3.94M |
|
1281
PUT
InMode
INMD
$872M
| $4.46M | 0.01% |
153,200
+93,600
| +157% | +$2.9M |
|
1282
PUT
Pultegroup
PHM
$24.5B
| $4.45M | 0.01% |
118,600
+69,700
| +143% | +$2.93M |
|
1283
CALL
Philips
PHG
$25.4B
| $4.44M | 0.01% |
337,281
-177,867
| -35% | -$2.89M |
|
1284
PUT
Lantheus
LNTH
$6.82B
| $4.42M | 0.01% |
62,900
+59,100
| +1,555% | +$4.48M |
|
1285
PUT
Cracker Barrel
CBRL
$1.2B
| $4.42M | 0.01% |
47,700
+38,900
| +442% | +$3.91M |
|
1286
CALL
Comstock Resources
CRK
$3.97B
| $4.42M | 0.01% |
255,400
+17,800
| +7% | +$295K |
|
1287
CALL
Baker Hughes
BKR
$56.8B
| $4.41M | 0.01% |
210,500
+104,500
| +99% | +$2.62M |
|
1288
CALL
Relmada Therapeutics
RLMD
$544M
| $4.41M | 0.01% |
119,000
-34,000
| -22% | -$942K |
|
|
CNR
1289
CALL
Core Natural Resources Inc
CNR
$4.19B
| $4.39M | 0.01% |
68,200
+19,900
| +41% | +$1.26M |
|
1290
CALL
Axsome Therapeutics
AXSM
$12.4B
| $4.38M | 0.01% |
98,200
-21,900
| -18% | -$1.09M |
|
1291
JD.com
JD
$40.8B
| $4.37M | ﹤0.01% |
+86,960
| New | +$5.15M |
|
1292
CALL
Pan American Silver
PAAS
$18.6B
| $4.37M | ﹤0.01% |
275,500
-2,500
| -0.9% | -$43.6K |
|
1293
PUT
Novavax
NVAX
$1.23B
| $4.37M | ﹤0.01% |
240,200
-141,300
| -37% | -$6.12M |
|
1294
PUT
Conagra Brands
CAG
$7.07B
| $4.37M | ﹤0.01% |
133,900
+75,600
| +130% | +$2.6M |
|
1295
PUT
SM Energy
SM
$7.96B
| $4.36M | ﹤0.01% |
115,900
+61,200
| +112% | +$2.41M |
|
1296
CALL
PennyMac Financial
PFSI
$4.38B
| $4.34M | ﹤0.01% |
101,100
-8,800
| -8% | -$460K |
|
|
BNY
1297
Bank of New York Mellon
BNY
$108B
| $4.33M | ﹤0.01% |
112,448
+68,809
| +158% | +$2.93M |
|
1298
PUT
Sony
SONY
$123B
| $4.33M | ﹤0.01% |
338,000
+199,000
| +143% | +$3.19M |
|
1299
Ryder
R
$10.3B
| $4.33M | ﹤0.01% |
57,334
+44,260
| +339% | +$3.37M |
|
1300
Kohl's
KSS
$2.03B
| $4.31M | ﹤0.01% |
171,483
+162,096
| +1,727% | +$4.73M |
|
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.