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 |
Alphabet (Google) Class C
GOOG
|
+$54.6M |
| 2 |
Apple
AAPL
|
+$29.1M |
| 3 |
Meta Platforms (Facebook)
META
|
+$15.7M |
| 4 |
IBM
IBM
|
+$13.8M |
| 5 |
Baidu
BIDU
|
+$10.6M |
Top Sells
| Rank | Stock | Value |
|---|---|---|
| 1 |
State Street SPDR S&P 500 ETF Trust
SPY
|
+$10.1M |
| 2 |
McDonald's
MCD
|
+$8.46M |
| 3 |
Ralph Lauren
RL
|
+$5.36M |
| 4 |
Intel
INTC
|
+$5.04M |
| 5 |
WBA
Walgreens Boots Alliance
WBA
|
+$4.76M |
Sector Composition
| Rank | Sector | Weight |
|---|---|---|
| 1 | Communication Services | 14.27% |
| 2 | Technology | 10.3% |
| 3 | Healthcare | 7.76% |
| 4 | Consumer Discretionary | 6.32% |
| 5 | Financials | 5.18% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Change in Stake | Capital Flow | |
|---|---|---|---|---|---|---|
|
CTRA
2501
CALL
DELISTED
Coterra Energy
CTRA
| $19K | ﹤0.01% |
233
+167
| +253% | +$5.57K |
|
2502
ProShares UltraShort Energy
DUG
$19.7M
| $19K | ﹤0.01% |
18
-134
| -88% | -$134K |
|
2503
CALL
Consolidated Edison
ED
$41.6B
| $19K | ﹤0.01% |
66
+10
| +18% | +$603 |
|
2504
CALL
Frontline
FRO
$8.75B
| $19K | ﹤0.01% |
27
+3
| +13% | +$40 |
|
2505
CALL
Freshpet
FRPT
$2.83B
| $19K | ﹤0.01% |
106
+18
| +20% | +$376 |
|
|
TDAY
2506
PUT
USA Today Co
TDAY
$1.23B
| $19K | ﹤0.01% |
+50
| New | +$1.07K |
|
2507
CALL
Honeywell
HON
$77.1B
| $19K | ﹤0.01% |
128
+32
| +33% | +$2.98K |
|
|
PPLI
2508
CALL
People Inc
PPLI
$3.1B
| $19K | ﹤0.01% |
397
+39
| +11% | +$517 |
|
2509
CALL
Invesco
IVZ
$13.3B
| $19K | ﹤0.01% |
204
-18
| -8% | -$721 |
|
2510
CALL
Mondelez International
MDLZ
$77.7B
| $19K | ﹤0.01% |
190
-408
| -68% | -$16K |
|
2511
Medallion Financial
MFIN
$226M
| $19K | ﹤0.01% |
+2,395
| New | +$23.8K |
|
2512
Mistras Group
MG
$492M
| $19K | ﹤0.01% |
+1,051
| New | +$19.6K |
|
2513
PUT
NetApp
NTAP
$32.9B
| $19K | ﹤0.01% |
235
-88
| -27% | -$3.05K |
|
2514
CALL
Omeros
OMER
$709M
| $19K | ﹤0.01% |
308
+11
| +4% | +$237 |
|
2515
Rogers Corp
ROG
$2.33B
| $19K | ﹤0.01% |
+294
| New | +$21.7K |
|
|
SA
2516
Seabridge Gold
SA
$2.8B
| $19K | ﹤0.01% |
3,245
+279
| +9% | +$1.75K |
|
|
SAFE
2517
Safehold
SAFE
$1.19B
| $19K | ﹤0.01% |
+308
| New | +$20.9K |
|
2518
Schwab US REIT ETF
SCHH
$11.7B
| $19K | ﹤0.01% |
+1,078
| New | +$20.8K |
|
2519
Scully Royalty
SRL
$76.7M
| $19K | ﹤0.01% |
981
+101
| +11% | +$2.18K |
|
|
TPH
2520
DELISTED
Tri Pointe Homes
TPH
| $19K | ﹤0.01% |
1,249
-220
| -15% | -$3.27K |
|
2521
UGI
UGI
$8B
| $19K | ﹤0.01% |
573
+419
| +272% | +$14.9K |
|
2522
United Natural Foods
UNFI
$3.01B
| $19K | ﹤0.01% |
+302
| New | +$20.5K |
|
2523
PUT
Upbound Group
UPBD
$1.19B
| $19K | ﹤0.01% |
67
-19
| -22% | -$570 |
|
|
BECN
2524
DELISTED
Beacon Roofing Supply, Inc.
BECN
| $19K | ﹤0.01% |
581
+129
| +29% | +$4.06K |
|
|
HA
2525
PUT
DELISTED
Hawaiian Holdings, Inc.
HA
| $19K | ﹤0.01% |
52
-45
| -46% | -$1.05K |
|
Similar funds
Simplex Trading's Q2 2015 Portfolio in Review
As of Q2 2015, Simplex Trading held 6,639 positions worth $1.19B, up 39% from $860M the previous quarter. Its ten largest holdings account for 20% of the portfolio.
Simplex Trading deployed $279M of net new capital in Q2 2015, opening 1,607 new positions and adding to 1,829 existing holdings. Its largest new stake was IBM: 85,948 shares worth $13.4M.
By sector, the portfolio is most concentrated in Communication Services at 14% of assets, up from 7.8% a quarter earlier, followed by Technology and Healthcare.
On the sell side, the largest reduction was Intel, an estimated $5.04M trimmed.
- Simplex Trading's largest Q2 2015 buy was IBM: 85,948 shares worth $13.4M.
- Simplex Trading added most to Alphabet (Google) Class C in Q2 2015, an estimated $54.6M increase.
- Simplex Trading's biggest Q2 2015 reduction was Intel, cutting an estimated $5.04M.
- Simplex Trading fully exited State Street SPDR S&P 500 ETF Trust in Q2 2015, selling an estimated $10.1M.
- Simplex Trading's ten largest holdings make up 20% of its $1.19B portfolio in Q2 2015.
- Simplex Trading opened 1,607 new positions and closed 1,438 in Q2 2015.
- Simplex Trading's portfolio value rose 39% quarter-over-quarter to $1.19B.
Based on Simplex Trading's 13F filing for Q2 2015, filed 8 Jul 2015.