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 |
Boeing
BA
|
+$55.8M |
| 2 |
Microsoft
MSFT
|
+$42.2M |
| 3 |
Pinduoduo
PDD
|
+$41.3M |
| 4 |
Apple
AAPL
|
+$32M |
| 5 |
Direxion Daily Semiconductor Bull 3X ETF
SOXL
|
+$28.3M |
Top Sells
| Rank | Stock | Value |
|---|---|---|
| 1 |
Broadcom
AVGO
|
+$95.2M |
| 2 |
Citigroup
C
|
+$57.2M |
| 3 |
Pfizer
PFE
|
+$56.4M |
| 4 |
TSMC
TSM
|
+$39.7M |
| 5 |
Starbucks
SBUX
|
+$35.5M |
Sector Composition
| Rank | Sector | Weight |
|---|---|---|
| 1 | Technology | 0.4% |
| 2 | Consumer Discretionary | 0.29% |
| 3 | Healthcare | 0.15% |
| 4 | Industrials | 0.13% |
| 5 | Financials | 0.13% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Change in Stake | Capital Flow | |
|---|---|---|---|---|---|---|
2026
CALL
Camtek
CAMT
$6.9B
| $2.67M | ﹤0.01% |
33,500
+21,500
| +179% | +$2.1M |
|
2027
CALL
Xerox
XRX
$337M
| $2.67M | ﹤0.01% |
257,600
+71,700
| +39% | +$767K |
|
2028
PUT
Viatris
VTRS
$20.1B
| $2.67M | ﹤0.01% |
230,100
+51,700
| +29% | +$596K |
|
2029
PUT
JPMorgan Inflation Managed Bond ETF
JCPI
$865M
| $2.67M | ﹤0.01% |
48,600
-2,800
| -5% | -$133K |
|
2030
Flutter Entertainment
FLUT
$17.6B
| $2.67M | ﹤0.01% |
11,246
+10,655
| +1,803% | +$2.21M |
|
2031
WisdomTree Japan Hedged Equity Fund
DXJ
$7.23B
| $2.66M | ﹤0.01% |
25,114
+12,318
| +96% | +$1.31M |
|
2032
CALL
ACM Research
ACMR
$5.83B
| $2.66M | ﹤0.01% |
131,000
+8,300
| +7% | +$159K |
|
2033
Kinross Gold
KGC
$28.5B
| $2.66M | ﹤0.01% |
283,838
-104,914
| -27% | -$942K |
|
2034
CALL
Xponential Fitness
XPOF
$265M
| $2.65M | ﹤0.01% |
214,100
+49,800
| +30% | +$732K |
|
2035
PUT
United Therapeutics
UTHR
$26.3B
| $2.65M | ﹤0.01% |
7,400
-18,700
| -72% | -$6.32M |
|
|
GRFS
2036
CALL
Grifois
GRFS
$5.16B
| $2.65M | ﹤0.01% |
298,200
-320,000
| -52% | -$2.6M |
|
2037
CALL
Vera Therapeutics
VERA
$2.54B
| $2.65M | ﹤0.01% |
59,900
+58,000
| +3,053% | +$2.2M |
|
2038
CALL
AngloGold Ashanti
AU
$40.3B
| $2.64M | ﹤0.01% |
99,300
-156,400
| -61% | -$4.49M |
|
2039
CALL
CVR Energy
CVI
$3.36B
| $2.64M | ﹤0.01% |
114,700
+51,300
| +81% | +$1.27M |
|
2040
Consolidated Edison
ED
$41.6B
| $2.63M | ﹤0.01% |
25,292
+16,323
| +182% | +$1.61M |
|
2041
Kohl's
KSS
$2.03B
| $2.63M | ﹤0.01% |
124,553
-10,757
| -8% | -$219K |
|
|
OKLO
2042
CALL
Oklo
OKLO
$7B
| $2.62M | ﹤0.01% |
324,100
-63,900
| -16% | -$481K |
|
2043
CALL
State Street SPDR Portfolio Europe ETF
SPEU
$712M
| $2.62M | ﹤0.01% |
49,200
-72,500
| -60% | -$3.12M |
|
2044
PUT
Northern Trust
NTRS
$22.2B
| $2.62M | ﹤0.01% |
29,100
+7,300
| +33% | +$638K |
|
2045
PUT
Talos Energy
TALO
$2.49B
| $2.62M | ﹤0.01% |
252,800
+1,300
| +0.5% | +$14.8K |
|
2046
PUT
iShares 0-5 Year Investment Grade Corporate Bond ETF
SLQD
$2.36B
| $2.61M | ﹤0.01% |
41,800
-4,800
| -10% | -$239K |
|
2047
CALL
Melco Resorts & Entertainment
MLCO
$2.1B
| $2.61M | ﹤0.01% |
335,400
+125,600
| +60% | +$742K |
|
2048
Tilray
TLRY
$479M
| $2.61M | ﹤0.01% |
148,370
+24,581
| +20% | +$442K |
|
|
METD
2049
CALL
Direxion Daily META Bear 1X ETF
METD
$8.53M
| $2.6M | ﹤0.01% |
55,100
+33,500
| +155% | +$771K |
|
2050
CALL
Capricor Therapeutics
CAPR
$1.14B
| $2.6M | ﹤0.01% |
171,100
+139,800
| +447% | +$691K |
|
Similar funds
Simplex Trading's Q3 2024 Portfolio in Review
As of Q3 2024, Simplex Trading held 9,964 positions worth $170B, up 5.3% from $162B the previous quarter. Its ten largest holdings account for 50% of the portfolio.
Simplex Trading's Q3 2024 filing shows 1,185 new, 3,232 increased, 3,829 reduced and 1,476 closed positions. Its largest new stake was Boeing: 325,328 shares worth $49.5M. The largest sale was Broadcom, an estimated $95.2M.
By sector, the portfolio is most concentrated in Technology at 0.4% of assets, down from 0.53% a quarter earlier, followed by Consumer Discretionary and Healthcare.
- Simplex Trading's largest Q3 2024 buy was Boeing: 325,328 shares worth $49.5M.
- Simplex Trading added most to Pinduoduo in Q3 2024, an estimated $41.3M increase.
- Simplex Trading's biggest Q3 2024 reduction was Citigroup, cutting an estimated $57.2M.
- Simplex Trading fully exited Broadcom in Q3 2024, selling an estimated $95.2M.
- Simplex Trading's ten largest holdings make up 50% of its $170B portfolio in Q3 2024.
- Simplex Trading opened 1,185 new positions and closed 1,476 in Q3 2024.
- Simplex Trading's portfolio value rose 5.3% quarter-over-quarter to $170B.
Based on Simplex Trading's 13F filing for Q3 2024, filed 8 Nov 2024.