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 | |
|---|---|---|---|---|---|---|
2026
Innovative Industrial Properties
IIPR
$1.78B
| $1.86M | ﹤0.01% |
21,010
+9,706
| +86% | +$942K |
|
2027
PUT
Williams Companies
WMB
$90.5B
| $1.86M | ﹤0.01% |
64,900
-232,200
| -78% | -$7.56M |
|
|
CERE
2028
CALL
DELISTED
Cerevel Therapeutics Holdings, Inc. Common Stock
CERE
| $1.86M | ﹤0.01% |
65,700
+61,500
| +1,464% | +$1.83M |
|
|
GRMN
2029
Garmin
GRMN
$46.9B
| $1.85M | ﹤0.01% |
+23,103
| New | +$2.18M |
|
2030
CALL
Targa Resources
TRGP
$60.4B
| $1.85M | ﹤0.01% |
30,700
+12,100
| +65% | +$795K |
|
2031
Xcel Energy
XEL
$51B
| $1.85M | ﹤0.01% |
28,942
+11,479
| +66% | +$836K |
|
2032
CALL
Kodiak Sciences
KOD
$2.59B
| $1.84M | ﹤0.01% |
238,400
+235,700
| +8,730% | +$2.29M |
|
2033
CALL
3D Systems Corp
DDD
$420M
| $1.84M | ﹤0.01% |
231,100
+100,000
| +76% | +$1.03M |
|
2034
Global X Uranium ETF
URA
$5.52B
| $1.84M | ﹤0.01% |
93,024
+22,753
| +32% | +$475K |
|
2035
CALL
AST SpaceMobile
ASTS
$16.8B
| $1.84M | ﹤0.01% |
255,000
+107,200
| +73% | +$943K |
|
2036
CALL
Old Dominion Freight Line
ODFL
$48.5B
| $1.84M | ﹤0.01% |
14,800
-38,000
| -72% | -$5.26M |
|
2037
Futu Holdings
FUTU
$13.9B
| $1.84M | ﹤0.01% |
+49,332
| New | +$2.15M |
|
|
WCC
2038
CALL
WESCO International
WCC
$16.2B
| $1.84M | ﹤0.01% |
15,400
-8,700
| -36% | -$1.09M |
|
|
RVNC
2039
PUT
DELISTED
Revance Therapeutics, Inc.
RVNC
| $1.84M | ﹤0.01% |
68,100
+26,900
| +65% | +$546K |
|
|
RDFN
2040
CALL
DELISTED
Redfin
RDFN
| $1.84M | ﹤0.01% |
314,600
-2,100
| -0.7% | -$18.6K |
|
|
NKLA
2041
DELISTED
Nikola Corporation Common Stock
NKLA
| $1.84M | ﹤0.01% |
17,395
+17,298
| +17,833% | +$2.93M |
|
2042
PUT
National Grid
NGG
$82.7B
| $1.83M | ﹤0.01% |
38,416
+34,855
| +979% | +$2.1M |
|
2043
PUT
CRISPR Therapeutics
CRSP
$4.58B
| $1.83M | ﹤0.01% |
28,000
-30,500
| -52% | -$2.21M |
|
2044
CALL
Vanguard Total Bond Market
BND
$157B
| $1.83M | ﹤0.01% |
25,500
+8,100
| +47% | +$606K |
|
2045
US Foods
USFD
$21.4B
| $1.83M | ﹤0.01% |
69,169
+67,966
| +5,650% | +$2.11M |
|
2046
CALL
Silicon Laboratories
SLAB
$7.15B
| $1.83M | ﹤0.01% |
14,800
+1,300
| +10% | +$174K |
|
|
DVAX
2047
DELISTED
Dynavax Technologies
DVAX
| $1.82M | ﹤0.01% |
174,146
+61,088
| +54% | +$796K |
|
2048
PUT
Omnicom Group
OMC
$22.7B
| $1.82M | ﹤0.01% |
28,800
-53,800
| -65% | -$3.65M |
|
2049
PUT
Philips
PHG
$25.4B
| $1.82M | ﹤0.01% |
137,809
+84,437
| +158% | +$1.37M |
|
|
RCM
2050
PUT
DELISTED
R1 RCM Inc. Common Stock
RCM
| $1.81M | ﹤0.01% |
+98,000
| New | +$2.23M |
|
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.