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 | |
|---|---|---|---|---|---|---|
251
PUT
FedEx
FDX
$76.2B
| $850K | 0.07% |
919
+253
| +38% | +$44K |
|
252
PUT
3D Systems Corp
DDD
$439M
| $845K | 0.07% |
505
-367
| -42% | -$8.85K |
|
|
TWC
253
CALL
DELISTED
TIME WARNER CABLE INC NEW COM STK
TWC
| $844K | 0.07% |
1,086
+676
| +165% | +$112K |
|
|
PLL
254
DELISTED
PALL CORP
PLL
| $842K | 0.07% |
+6,773
| New | +$765K |
|
255
PUT
Union Pacific
UNP
$174B
| $841K | 0.07% |
1,342
-24
| -2% | -$2.5K |
|
|
ESRX
256
CALL
DELISTED
Express Scripts Holding Company
ESRX
| $827K | 0.07% |
765
+13
| +2% | +$1.14K |
|
|
TWTR
257
CALL
DELISTED
Twitter, Inc.
TWTR
| $823K | 0.07% |
4,106
-906
| -18% | -$37K |
|
258
Eastman Chemical
EMN
$7.95B
| $822K | 0.07% |
10,058
+9,954
| +9,571% | +$768K |
|
|
LNKD
259
DELISTED
LinkedIn Corporation
LNKD
| $811K | 0.07% |
3,929
-8,726
| -69% | -$1.94M |
|
260
PUT
Stratasys
SSYS
$710M
| $808K | 0.07% |
214
-220
| -51% | -$9.23K |
|
261
Johnson & Johnson
JNJ
$613B
| $801K | 0.07% |
8,223
+1,041
| +14% | +$104K |
|
|
YOKU
262
DELISTED
YOUKU TUDOU INC.(CAYMAN ISLS)
YOKU
| $799K | 0.07% |
32,587
+22,005
| +208% | +$497K |
|
263
CALL
Herbalife
HLF
$1.27B
| $795K | 0.07% |
2,244
-1,228
| -35% | -$29.7K |
|
264
Infosys
INFY
$44.1B
| $795K | 0.07% |
+100,436
| New | +$816K |
|
|
OCR
265
DELISTED
OMNICARE INC
OCR
| $780K | 0.07% |
+8,284
| New | +$739K |
|
|
FISV
266
Fiserv Inc
FISV
$26.7B
| $778K | 0.07% |
+18,790
| New | +$756K |
|
267
CALL
Amgen
AMGN
$198B
| $772K | 0.06% |
1,765
+326
| +23% | +$52.2K |
|
|
PCP
268
DELISTED
PRECISION CASTPARTS CORP
PCP
| $771K | 0.06% |
3,860
-627
| -14% | -$132K |
|
269
Pfizer
PFE
$142B
| $768K | 0.06% |
+24,163
| New | +$788K |
|
270
CALL
GoPro
GPRO
$125M
| $766K | 0.06% |
2,257
+5
| +0.2% | +$257 |
|
271
Colgate-Palmolive
CL
$73.5B
| $763K | 0.06% |
11,678
+3,284
| +39% | +$223K |
|
|
MJN
272
DELISTED
Mead Johnson Nutrition Company
MJN
| $753K | 0.06% |
8,354
+7,655
| +1,095% | +$738K |
|
|
AGU
273
DELISTED
Agrium
AGU
| $752K | 0.06% |
7,102
+89
| +1% | +$9.37K |
|
274
PUT
Capri Holdings
CPRI
$1.84B
| $747K | 0.06% |
469
+168
| +56% | +$9.47K |
|
|
SDRL
275
PUT
DELISTED
Seadrill Limited Common Stock
SDRL
| $747K | 0.06% |
4
-1
| -20% | -$3.23K |
|
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.