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 | |
|---|---|---|---|---|---|---|
1801
Steel Dynamics
STLD
$35.6B
| $2.37M | ﹤0.01% |
33,451
-17,476
| -34% | -$1.32M |
|
1802
CALL
Kyndryl
KD
$2.66B
| $2.37M | ﹤0.01% |
286,800
+7,900
| +3% | +$82.2K |
|
1803
CALL
Legend Biotech
LEGN
$4.3B
| $2.37M | ﹤0.01% |
58,100
-800
| -1% | -$37.5K |
|
1804
PUT
Tapestry
TPR
$28.8B
| $2.37M | ﹤0.01% |
83,200
+47,900
| +136% | +$1.6M |
|
1805
PUT
Ambev
ABEV
$47.3B
| $2.36M | ﹤0.01% |
835,500
+241,000
| +41% | +$683K |
|
|
JMIA
1806
CALL
Jumia Technologies
JMIA
$726M
| $2.36M | ﹤0.01% |
406,100
+85,600
| +27% | +$584K |
|
1807
CALL
Fiverr
FVRR
$376M
| $2.36M | ﹤0.01% |
77,100
+10,000
| +15% | +$355K |
|
1808
CALL
Greif
GEF
$4.47B
| $2.36M | ﹤0.01% |
39,600
+19,000
| +92% | +$1.27M |
|
1809
CALL
Dover
DOV
$27.2B
| $2.35M | ﹤0.01% |
20,200
-600
| -3% | -$76.6K |
|
1810
CALL
WIX.com
WIX
$2.15B
| $2.35M | ﹤0.01% |
30,100
+2,500
| +9% | +$172K |
|
1811
CALL
RingCentral
RNG
$4.05B
| $2.35M | ﹤0.01% |
58,900
-69,900
| -54% | -$3.35M |
|
1812
PUT
Iron Mountain
IRM
$38.2B
| $2.35M | ﹤0.01% |
53,500
-37,100
| -41% | -$1.87M |
|
1813
CALL
Altimmune
ALT
$539M
| $2.35M | ﹤0.01% |
184,100
+176,100
| +2,201% | +$2.6M |
|
1814
PUT
Shutterstock
SSTK
$205M
| $2.35M | ﹤0.01% |
46,800
+45,800
| +4,580% | +$2.63M |
|
1815
PUT
Citizens Financial Group
CFG
$30.4B
| $2.34M | ﹤0.01% |
68,200
+22,600
| +50% | +$836K |
|
1816
CALL
Par Pacific Holdings
PARR
$3.88B
| $2.34M | ﹤0.01% |
142,800
+138,400
| +3,145% | +$2.35M |
|
|
AMRS
1817
CALL
DELISTED
Amyris Inc.
AMRS
| $2.34M | ﹤0.01% |
802,300
+602,600
| +302% | +$1.64M |
|
|
MTTR
1818
CALL
DELISTED
Matterport, Inc. Class A Common Stock
MTTR
| $2.34M | ﹤0.01% |
617,300
+109,200
| +21% | +$481K |
|
1819
PUT
Chord Energy
CHRD
$7.79B
| $2.34M | ﹤0.01% |
17,100
+15,800
| +1,215% | +$2.03M |
|
|
KZR
1820
CALL
DELISTED
Kezar Life Sciences
KZR
| $2.33M | ﹤0.01% |
27,100
+2,880
| +12% | +$280K |
|
1821
CALL
Raymond James Financial
RJF
$32.5B
| $2.33M | ﹤0.01% |
23,600
-1,800
| -7% | -$182K |
|
1822
PUT
Banco Bradesco
BBD
$38.1B
| $2.33M | ﹤0.01% |
632,913
+276,870
| +78% | +$976K |
|
1823
Elanco Animal Health
ELAN
$12.4B
| $2.33M | ﹤0.01% |
187,690
+123,066
| +190% | +$2.15M |
|
|
PR
1824
CALL
Permian Resources
PR
$17.9B
| $2.33M | ﹤0.01% |
342,600
-25,800
| -7% | -$178K |
|
|
TTM.RT
1825
CALL
DELISTED
TATA MOTORS LIMITED RT PUR ADR
TTM.RT
| $2.33M | ﹤0.01% |
96,000
+37,400
| +64% | +$907K |
|
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.