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 | |
|---|---|---|---|---|---|---|
|
KE
7676
PUT
Kimball Electronics
KE
$591M
| $17K | ﹤0.01% |
1,000
| – | – |
|
7677
CALL
Knowles
KN
$3.08B
| $17K | ﹤0.01% |
1,400
-1,500
| -52% | -$24K |
|
|
LMFA
7678
DELISTED
LM Funding America
LMFA
| $17K | ﹤0.01% |
120
+99
| +471% | +$15.9K |
|
7679
Lemonade
LMND
$3.76B
| $17K | ﹤0.01% |
837
+37
| +5% | +$841 |
|
7680
PUT
LG Display
LPL
$2.98B
| $17K | ﹤0.01% |
4,400
-2,400
| -35% | -$13.5K |
|
7681
PUT
Orion Energy Systems
OESX
$40.3M
| $17K | ﹤0.01% |
1,090
-2,740
| -72% | -$48.6K |
|
7682
PUT
Oportun Financial
OPRT
$259M
| $17K | ﹤0.01% |
4,000
-6,800
| -63% | -$48.3K |
|
7683
CALL
Oxford Industries
OXM
$571M
| $17K | ﹤0.01% |
200
-3,400
| -94% | -$329K |
|
7684
CALL
Phreesia
PHR
$656M
| $17K | ﹤0.01% |
700
+300
| +75% | +$7.49K |
|
|
PMT
7685
PUT
PennyMac Mortgage Investment
PMT
$812M
| $17K | ﹤0.01% |
1,500
-900
| -38% | -$13.2K |
|
|
PRA
7686
CALL
DELISTED
ProAssurance
PRA
| $17K | ﹤0.01% |
900
-300
| -25% | -$6.59K |
|
7687
PUT
Privia Health
PRVA
$3.01B
| $17K | ﹤0.01% |
500
-100
| -17% | -$3.7K |
|
7688
CALL
Pricesmart
PSMT
$5.94B
| $17K | ﹤0.01% |
300
| – | – |
|
7689
RCM Technologies
RCMT
$202M
| $17K | ﹤0.01% |
1,053
+565
| +116% | +$9.79K |
|
7690
Saic
SAIC
$4.89B
| $17K | ﹤0.01% |
196
-1,207
| -86% | -$112K |
|
7691
PUT
Sunstone Hotel Investors
SHO
$2.18B
| $17K | ﹤0.01% |
1,900
+1,500
| +375% | +$16.2K |
|
7692
Sun Life Financial
SLF
$45.9B
| $17K | ﹤0.01% |
+430
| New | +$19.3K |
|
7693
StoneX
SNEX
$9.39B
| $17K | ﹤0.01% |
+1,068
| New | +$18.3K |
|
|
STKH
7694
Steakholder Foods
STKH
$1.67M
| $17K | ﹤0.01% |
+7
| New | +$26.6K |
|
7695
PUT
SurgePays
SURG
$5.43M
| $17K | ﹤0.01% |
+3,800
| New | +$19.4K |
|
7696
CALL
Texas Capital Bancshares
TCBI
$4.29B
| $17K | ﹤0.01% |
+300
| New | +$17.8K |
|
7697
TriCo Bancshares
TCBK
$1.85B
| $17K | ﹤0.01% |
+400
| New | +$18.8K |
|
7698
TFS Financial
TFSL
$5.06B
| $17K | ﹤0.01% |
1,335
-2,242
| -63% | -$31.8K |
|
7699
CALL
Turkcell
TKC
$4.72B
| $17K | ﹤0.01% |
6,500
+5,500
| +550% | +$15K |
|
7700
TriplePoint Venture Growth BDC
TPVG
$185M
| $17K | ﹤0.01% |
1,648
-20,432
| -93% | -$266K |
|
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.