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 | |
|---|---|---|---|---|---|---|
|
PF
276
DELISTED
Pinnacle Foods, Inc.
PF
| $747K | 0.06% |
+16,408
| New | +$693K |
|
|
FIT
277
DELISTED
Fitbit, Inc. Class A common stock
FIT
| $746K | 0.06% |
+19,534
| New | +$686K |
|
|
SFG
278
DELISTED
STANCORP FINL GRP
SFG
| $744K | 0.06% |
+9,849
| New | +$725K |
|
279
ProShares UltraPro QQQ
TQQQ
$34.3B
| $743K | 0.06% |
+335,520
| New | +$780K |
|
|
ESPR
280
DELISTED
Esperion Therapeutics
ESPR
| $739K | 0.06% |
9,041
+1,631
| +22% | +$160K |
|
281
PUT
Western Digital
WDC
$192B
| $737K | 0.06% |
655
+56
| +9% | +$4.01K |
|
282
Capri Holdings
CPRI
$1.84B
| $735K | 0.06% |
17,466
+9,341
| +115% | +$527K |
|
283
NCR Voyix
VYX
$1.07B
| $735K | 0.06% |
39,814
+21,654
| +119% | +$400K |
|
|
HME
284
DELISTED
HOME PROPERTIES, INC
HME
| $735K | 0.06% |
+10,065
| New | +$730K |
|
285
Cal-Maine
CALM
$4.14B
| $732K | 0.06% |
+14,038
| New | +$690K |
|
|
CHK
286
DELISTED
Chesapeake Energy Corporation
CHK
| $730K | 0.06% |
+327
| New | +$923K |
|
|
DATA
287
DELISTED
Tableau Software, Inc.
DATA
| $730K | 0.06% |
6,336
+5,728
| +942% | +$619K |
|
288
BlackBerry
BB
$5.24B
| $729K | 0.06% |
89,232
+5,839
| +7% | +$56.6K |
|
|
TECD
289
DELISTED
Tech Data Corp
TECD
| $728K | 0.06% |
+12,653
| New | +$762K |
|
|
GOLD
290
DELISTED
Randgold Resources Ltd
GOLD
| $728K | 0.06% |
10,948
+8,623
| +371% | +$623K |
|
291
PUT
Freeport-McMoran
FCX
$92.8B
| $724K | 0.06% |
1,837
+573
| +45% | +$11.8K |
|
292
NextEra Energy
NEE
$187B
| $723K | 0.06% |
29,532
+25,952
| +725% | +$660K |
|
293
Aon
AON
$75.3B
| $721K | 0.06% |
7,236
+6,593
| +1,025% | +$660K |
|
|
QIHU
294
CALL
DELISTED
QIHOO 360 TECHNOLOGY CO LTD ADS RPSTG 3 CL A SHS
QIHU
| $721K | 0.06% |
1,864
+1,420
| +320% | +$85.7K |
|
295
General Motors
GM
$73.9B
| $720K | 0.06% |
+21,620
| New | +$771K |
|
296
Deutsche Bank
DB
$68.1B
| $719K | 0.06% |
26,730
+24,581
| +1,144% | +$714K |
|
297
CALL
Xtrackers MSCI Emerging Markets Hedged Equity ETF
DBEM
$109M
| $719K | 0.06% |
2,963
+2,287
| +338% | +$51.8K |
|
298
PUT
BP
BP
$112B
| $715K | 0.06% |
1,126
+232
| +26% | +$8.12K |
|
299
Devon Energy
DVN
$51.8B
| $714K | 0.06% |
12,012
+6,609
| +122% | +$427K |
|
300
Nasdaq
NDAQ
$51.1B
| $713K | 0.06% |
+43,827
| New | +$735K |
|
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.